EP2253274A1 - Dispositif pour une tomodensitométrie assistée par ultrasons ayant une zone de mesure élargie - Google Patents

Dispositif pour une tomodensitométrie assistée par ultrasons ayant une zone de mesure élargie Download PDF

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Publication number
EP2253274A1
EP2253274A1 EP10004023A EP10004023A EP2253274A1 EP 2253274 A1 EP2253274 A1 EP 2253274A1 EP 10004023 A EP10004023 A EP 10004023A EP 10004023 A EP10004023 A EP 10004023A EP 2253274 A1 EP2253274 A1 EP 2253274A1
Authority
EP
European Patent Office
Prior art keywords
container
buffer element
coupling medium
ultrasound
adapter support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10004023A
Other languages
German (de)
English (en)
Inventor
Lothar Gumb
Jörg VAGNER
Nicole Ruiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Karlsruher Institut fuer Technologie KIT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karlsruher Institut fuer Technologie KIT filed Critical Karlsruher Institut fuer Technologie KIT
Publication of EP2253274A1 publication Critical patent/EP2253274A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/40—Positioning of patients, e.g. means for holding or immobilising parts of the patient's body
    • A61B8/406—Positioning of patients, e.g. means for holding or immobilising parts of the patient's body using means for diagnosing suspended breasts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
    • A61B8/0825—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of the breast, e.g. mammography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4272—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue
    • A61B8/4281—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue characterised by sound-transmitting media or devices for coupling the transducer to the tissue

Definitions

  • the invention relates to a device for an ultrasound-assisted computed tomography, preferably for breast examinations (sonographic mammography) according to the first patent claim.
  • Ultrasound examinations are regarded as imaging diagnostic methods in medical technology not only as particularly economical, but also tissue-preserving.
  • a medical ultrasound device consists essentially of a transducer with a number of ultrasonic transducers and a control and evaluation unit which emits the control pulses for the ultrasonic transducer and the ultrasound signals reflected in the patient body (echo signals) resumes and amplified as electrical signals to the evaluation forwards (impulse -echo method).
  • the display is usually done in real time on a screen.
  • US 4,478,083 discloses a system for ultrasound mammography in which a female breast is inserted and positioned from above into a cylindrical container.
  • the container has a plurality of fixed ultrasonic transducers over the entire cylindrical wall surface.
  • DE 28 27 423 A1 Describe a device for determining the internal structure of a body by means of sound beams, in which the body is introduced into a container filled with a coupling medium container and is sonicated in this with the ultrasonic transmission method.
  • one or more ultrasound transmitters send a sound beam through the body to at least one ultrasound transducer as receiver, the received signals in an evaluation unit electronically processed, stored and then determined the distribution of the sound refractive index and the absorption coefficient.
  • the DE 100 50 232 A1 discloses a high-resolution ultrasound tomograph for tissue examinations of body parts and in particular of the female breast according to the transmission scattering and pulse-echo method. It consists of an open-topped and filled with a coupling medium container into which the body part to be examined is introduced, with fixed to the container wall over the entire wall surface fixed ultrasonic transducers whose main emission is aligned in each case perpendicularly from the wall surface into the container interior. A computer-aided control and evaluation unit is used for the individual control of ultrasonic transducers and the visualization of the signals received from selected receivers.
  • the object of the invention is to propose a device for an ultrasound-assisted computed tomography with an extended measuring range, which in particular enables reliable mammography of the entire breast, ie also in the vicinity of the thorax, ie in the region of the container opening.
  • an apparatus for an ultrasound-supported computed tomography on objects comprising a container filled with a coupling medium container with a container opening.
  • the container has a number of ultrasonic transducers which act on the coupling medium in the container.
  • the ultrasonic transducers are mounted on the wall of the container or in a separate carrier, which can be handled remotely in the container, such as e.g. an inner container fixed.
  • a feature of the solution includes an adapter pad for an object, preferably the patient's body surface around a limb to be examined, such as the thorax area around a patient's breast to be examined on the container opening.
  • the adapter pad also serves as a sealing element between the container opening and the object and thus prevents leakage of ultrasound coupling medium, preferably a gel (ultrasound coupling gel) or a liquid from the container.
  • the adapter support has a resilient buffer element, which applies in an annular, positive and sealing manner to the object or the aforementioned patient body, preferably to the thorax of a patient.
  • the buffer element is preferably formed by an annular buffer element filled with a fluid or gel.
  • the annular buffer element preferably has a shape that is adapted to the object or the patient's body, preferably prefabricated, and depending on which one is to be examined resting object or patient body in the adapter support is exchangeable designed.
  • the annular buffer element is therefore preferably not constantly thick and topograhisch and running in the same cross-section, but in their cross section adapted to the bridging gap between the patient's body or object and the inclusion of the buffer member in the adapter pad bridging. To avoid unwanted ultrasonic reflections on the buffer element, this has an acoustic impedance, which preferably deviates at most 5% from that of the coupling medium.
  • the buffer element preferably consists of a plastic sleeve filled with the coupling medium, preferably an aqueous solution or water.
  • the plastic shell itself is preferably to be designed with little reflection on ultrasonic waves, preferably thin with a wall thickness preferably less than 1 mm, more preferably less than 0.5 mm wall thickness and rough surfaces.
  • the adapter pad but at least the buffer element is optionally designed interchangeable. It not only favors fast sterilization (or sterilization) of the ultrasound device but also a possibility of adapting the device to different geometries of the patient's body or of the object in the contact area during sonographic examinations.
  • the device additionally has a discharge for the coupling medium in the region of the adapter support.
  • the derivative is preferably carried out as active suction.
  • the discharge or suction preferably takes place in the region of the container opening, ie at the highest point of the volume available for the coupling medium in the container. This also ensures that the container is completely filled with an object or patient lying on the coupling medium and in particular upwardly rising air or gas components are derived or sucked.
  • a possible embodiment has a derivative or suction of the aforementioned type with a ring drain in the adapter pad.
  • the annular drainage comprises at least one drainage channel and serves to receive leakage currents of the coupling medium which occur between the object or patient and the buffer element or possible movable (rotatable or displaceable) connections between the adapter support and the container.
  • the annular channel serves as collecting or collecting channel for the emerging from the container coupling medium.
  • Another possible embodiment comprises means for an active fluid circuit for the coupling medium.
  • the coupling medium is passed on to the discharge or suction in the region of the container opening or the adapter support, if necessary via a further annular channel or another collection or collecting channel, and from there into a drain or outlet.
  • the outflow or outlet preferably opens directly into a circulating pump, preferably with an upstream gas separator and / or filter for the separation of gaseous or solid components. By the circulation pump, a return of the coupling medium is carried back into the container.
  • the device has a traversing device of the container below the adapter support.
  • a vertical traversing device makes it possible, for example, to approach the container with the ultrasound transducers from below against a patient lying on the adapter support or against an overlying patient or object. Lateral, ie horizontal adjustment or twisting possibilities for one or more translational or rotational degrees of freedom also allow any necessary adjustment of the ultrasonic transducer to the object to be examined.
  • the adapter support as a form-fitting, conformable to the patient's body sealing element and the container, a largely dense containment is created, which with coupling medium such.
  • fluid filled virtually encloses the entire breast, thus making an extended area of the breast accessible to US mammography.
  • Essential in the invention is a maximum access range of the mamma or another object through the ultrasound coupling medium and thus for the ultrasonic signals.
  • the detection range of sonographic examinations with echo evaluation (impulse echo method) with the access area via the breast also extends into the adjacent areas of the patient, i. beyond the edge of the container in a particularly advantageous manner, if above all a sufficient sonographic connection in the region near the adapter support and thus the largest possible sonographic access angle to the tissue to be examined is ensured.
  • An aforementioned sealing adapter pad not only allows a maximum possible increase in the container cavity flooded with coupling medium up to the armpit area of a patient, but also the use of particularly low-viscosity coupling media.
  • An ultrasound examination is possible up to tissue located above the edge of the measuring container, wherein a filling of the buffer element of the adapter support with coupling medium causes a further enlargement of the measuring range.
  • the illustrated embodiment discloses a device for ultrasound-assisted computed tomography, especially on the female breast, for extended range ultrasound mammography.
  • the figures show the device without a detailed representation of the associated units for the control, data processing or visualization.
  • Fig.1 shows the device without an object to be examined with a container 1 of a plurality of this inside ultrasonic transducers 2, which are aligned in the Be bachelorerkavmaschine 3 and an upwardly open container edge 4.
  • the container is shell or hemisphere, ie, it has a rounded and ground occupied by ultrasonic transducers. He is thus particularly suitable for the aforementioned sonographic detection of body regions of the patient, which are arranged above the container rim 4 or the patch pad 5 placed on this, ie area that are not lapped by coupling medium.
  • the adapter support 5 comprises an annular buffer element 6, shown by way of example with a circular cross-section as a sealing positive fit of a patient and an annular support 7 with an annular channel 8 with sliding seal 9 to an annular sump 10 with drain 11 for the out of the container in the annular channel as collecting channel ausmündende coupling medium.
  • the sliding seal acts against a container-side shielding plate 17, which also forms the lower boundary of the annular channel 8 . It allows vertical and rotational relative movements from container to adapter support.
  • the drip pan 10 serves to dissipate leakage losses of the coupling medium, which is pressed by said slide seal or between Pufferlement 6 and patient body 13 (see. Fig.2 ) in a drainage channel 16 and from there into the Drip tray 10 is passed. Drip pan 10, drain 11 and drain channel 16 thus form a ring drainage, wherein the coupling medium derived thereby is preferably cleaned off and / or stored in a collecting container intermediately stored in the container.
  • the annular channel 8 opens into an outlet 18, via which the coupling medium can be discharged or sucked off, preferably in the context of an aforementioned fluid circuit.
  • the coupling medium collected via the annular drainage is preferably also fed back.
  • An outlet is used in the embodiment in the shielding plate 17 .
  • This embodiment makes do without flexible lines that is advantageous only with rigid fluid connections, when the forwarding, processing and re-introduction of the coupling medium are carried out in the container of fluidly connected to the container fluidic units such as pumps, filters or lines.
  • An alternative arrangement of the outlet in the carrier 7 favors a forwarding and processing without flexible pipe connections in stationary systems.
  • Fig.2 shows the in Fig.1 illustrated embodiment with resting on the patient support patient 13 with a hanging in the Be Strukturerkavmaschine 3 down mamma 14.
  • the available cavity for the coupling medium in the container is thus limited by the container walls or ultrasonic transducers 2 on the one hand and by the adapter support and the breast on the other.
  • Fig.1 and 2 further show an axis of symmetry 15 of the container.
  • the half of the figure to the left of this line of symmetry each show a container in the upper position, that is to say in the preferred position for sonographic examination.
  • the right half of the image shows a deviating, ie vertically lowered, positioning of the container with a corresponding widening of the annular gap 8.
  • a manual, hydraulic or electromechanical traversing device for the vertical adjustment is not indicated in the figures, but is preferably arranged underneath the container and grips it preferably in the region of symmetry axes 15 .
  • Alternative traversing devices are arranged on the adapter support and preferably engage at least three locations arranged on the circumference of the container opening on the container.
  • the control of the ultrasonic transducer 2 and an adjusting device is not shown, but takes place for example via an interface laterally of the patient bed, which allows rapid replacement of the device, for example to a central high-performance computer unit and thus a rapid sequence of sonographic examinations of a variety of patients.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
EP10004023A 2009-05-20 2010-04-16 Dispositif pour une tomodensitométrie assistée par ultrasons ayant une zone de mesure élargie Withdrawn EP2253274A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910022060 DE102009022060A1 (de) 2009-05-20 2009-05-20 Vorrichtung für eine Ultraschallgestützte Computertomographie mit erweitertem Messbereich

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EP2253274A1 true EP2253274A1 (fr) 2010-11-24

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EP10004023A Withdrawn EP2253274A1 (fr) 2009-05-20 2010-04-16 Dispositif pour une tomodensitométrie assistée par ultrasons ayant une zone de mesure élargie

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EP (1) EP2253274A1 (fr)
DE (1) DE102009022060A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011076163A1 (fr) * 2009-12-21 2011-06-30 Ruprecht-Karls-Universität Heidelberg Dispositif pour obtenir des données d'image de structures osseuses, en particulier pour le diagnostic de fractures osseuses
EP3906858A1 (fr) * 2020-05-08 2021-11-10 Karlsruher Institut für Technologie Dispositif et procédé de réflexion d'ultrasons 3d et de tomographie de transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102157A1 (de) * 2014-02-20 2015-08-20 Karlsruher Institut für Technologie Vorrichtung für die ultraschallgestützte Reflexions- und Transmissions-Tomographie

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827423A1 (de) 1978-06-22 1980-01-10 Philips Patentverwaltung Verfahren und vorrichtung zur ermittlung der inneren struktur eines koerpers mit hilfe von schallstrahlen
US4282880A (en) * 1980-03-12 1981-08-11 Technicare Corporation Water circulation and maintenance system for an ultrasound mammary scanning apparatus
US4478083A (en) 1982-06-30 1984-10-23 Siemens Aktiengesellschaft Plane reconstruction ultrasound tomography device
US4870970A (en) * 1986-08-12 1989-10-03 Fulmer Limited Ultrasonic investigation apparatus
WO1999055234A1 (fr) * 1998-04-24 1999-11-04 Wollschlaeger Helmut Dispositif et procede pour examiner des seins de femme au moyen d'ultrasons
DE10050232A1 (de) 2000-10-11 2002-05-02 Karlsruhe Forschzent Hochauflösender Ultraschalltomograph
WO2006007423A1 (fr) * 2004-06-16 2006-01-19 Techniscan, Inc. Methode et appareil d'imagerie et de traitement d'un sein

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7264592B2 (en) * 2002-06-28 2007-09-04 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Scanning devices for three-dimensional ultrasound mammography

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827423A1 (de) 1978-06-22 1980-01-10 Philips Patentverwaltung Verfahren und vorrichtung zur ermittlung der inneren struktur eines koerpers mit hilfe von schallstrahlen
US4282880A (en) * 1980-03-12 1981-08-11 Technicare Corporation Water circulation and maintenance system for an ultrasound mammary scanning apparatus
US4478083A (en) 1982-06-30 1984-10-23 Siemens Aktiengesellschaft Plane reconstruction ultrasound tomography device
US4870970A (en) * 1986-08-12 1989-10-03 Fulmer Limited Ultrasonic investigation apparatus
WO1999055234A1 (fr) * 1998-04-24 1999-11-04 Wollschlaeger Helmut Dispositif et procede pour examiner des seins de femme au moyen d'ultrasons
DE10050232A1 (de) 2000-10-11 2002-05-02 Karlsruhe Forschzent Hochauflösender Ultraschalltomograph
WO2006007423A1 (fr) * 2004-06-16 2006-01-19 Techniscan, Inc. Methode et appareil d'imagerie et de traitement d'un sein

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011076163A1 (fr) * 2009-12-21 2011-06-30 Ruprecht-Karls-Universität Heidelberg Dispositif pour obtenir des données d'image de structures osseuses, en particulier pour le diagnostic de fractures osseuses
EP3906858A1 (fr) * 2020-05-08 2021-11-10 Karlsruher Institut für Technologie Dispositif et procédé de réflexion d'ultrasons 3d et de tomographie de transmission
WO2021224398A1 (fr) * 2020-05-08 2021-11-11 Karlsruher Institut für Technologie Dispositif et procédé de réflexion basée sur ultrasons 3d et de tomographie par émission
US20230218274A1 (en) * 2020-05-08 2023-07-13 Karlsruher Institut für Technologie Device and method for 3d ultrasound-based reflection and transmission tomography
CN115551414B (zh) * 2020-05-08 2023-11-14 卡尔斯鲁厄理工学院 用于基于3d超声的反射和透射断层摄影的设备和方法
US11877892B2 (en) * 2020-05-08 2024-01-23 Karlsruher Institut für Technologie Device and method for 3D ultrasound-based reflection and transmission tomography of a body

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Publication number Publication date
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